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From: Naoya Horiguchi To: Miaohe Lin Cc: akpm@linux-foundation.org, naoya.horiguchi@nec.com, linux-mm@kvack.org, linux-kernel@vger.kernel.org Subject: Re: [PATCH 4/8] mm: memory-failure: use local variable huge to check hugetlb page Message-ID: <20230710075704.GD1686200@ik1-406-35019.vs.sakura.ne.jp> References: <20230708085744.3599311-1-linmiaohe@huawei.com> <20230708085744.3599311-5-linmiaohe@huawei.com> MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline In-Reply-To: <20230708085744.3599311-5-linmiaohe@huawei.com> X-Migadu-Flow: FLOW_OUT X-Rspamd-Queue-Id: 2A9001A000D X-Rspam-User: X-Rspamd-Server: rspam04 X-Stat-Signature: 1ta1yrjam6s4a5hykzi4y74wdrxczxfy X-HE-Tag: 1688975829-958567 X-HE-Meta: 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 yQhsPB4K NcXdUOX9l69Zh2bCbBUj2FOok2XEPTw/8iF7Vcsa96Ql++JplMAyZtBwLchlpFwd4nApANI91tF3/ueEUge8hWtSqmhCLP4iBSMTjn//Iz6ERFbT9HMMkNNuHNw== X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: On Sat, Jul 08, 2023 at 04:57:40PM +0800, Miaohe Lin wrote: > Use local variable huge to check whether page is hugetlb page to avoid > calling PageHuge() multiple times to save cpu cycles. PageHuge() will > be stable while extra page refcnt is held. > > Signed-off-by: Miaohe Lin Acked-by: Naoya Horiguchi